In town, blood-sucking incidents are growing frequent. As Kitaro investigates, he receives a letter. The sender wants to be killed. Kitaro goes to visit the sender and meets Onozaki, a genetics researcher. Onozaki has created immortal cells and conducted an experiment where he injected himself with them. As a result, he has obtained an immortal body and also turned into a youkai. When he transformed into a youkai, he lost control and went seeking blood. All the recent blood-sucking incidents were Onozaki's doing. Because of the immortal cells, Onozaki can't kill himself, so he begs Kitaro to kill him, but...
When I become the Odoro-Odoro,
I'm no longer myself.
عندما أصبح أودورو-أودورو
.لا أشعر بذاتي أبدًا
Wenn ich zu Odoro-Odoro werde,
bin ich nicht mehr ich selbst.
Al convertirme en Odoro-Odoro, 
dejo de ser yo.
Al convertirme en Odoro-Odoro,
dejo de ser yo.
Lorsqu’il prend le contrôle,
je cesse d’être moi-même.
Quando divento Odoro Odoro,
non sono più io.
Quando me torno
Odoro-odoro, deixo de ser eu.
Став Одоро-одоро, 
я уже не могу себя контролировать.